铁白云石
异构化
选择性
沸石
烯烃纤维
化学
催化作用
ZSM-5型
布朗斯特德-洛瑞酸碱理论
分子
分子筛
光化学
无机化学
硅酸铝
酸强度
有机化学
作者
Wang-Gi Kim,Jong-Ho Kim,Byoung Joon Ahn,Gon Seo
摘要
The skeletal isomerization of C4-C7 1-olefins was studied on ferrierite (FER) and ZSM-5 (MFI) zeolites to elucidate the effect of the molecular distribution in zeolite pores on the selectivity foriso-olefin formation. Regardless of the difference in molecular length of 1-olefins, the FER zeolite showed high selectivity foriso-olefins, while the selectivity became slightly low at the skeletal isomerization of long olefin molecules. The drastic decrease in the selectivity of MFI zeolites by increasing the conversion is concurrently observed in the skeletal isomerization of C4-C7 1-olefins. The high selectivity of FER zeolites is explained by their sparse distributions of olefin molecules in pores, which induces a high preference for monomolecular skeletal isomerization.
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